UUID Generator
Generate, validate, and inspect universally unique identifiers
Time-based
UUID V1
146685a0-1fde-11f1-b01e-17d4783ea098
Random
UUID V4
78745ddd-da85-4dad-ac86-48e0157c69c7
Name-based
UUID V5
d80fd0af-8b11-52f0-916d-4ad2bff06d75
Batch Generator
Version
UUID Validator
Paste a UUID to check if it's valid and identify its version.
UUID Versions Explained
Version 1
Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.
Version 4
Purely random. The most commonly used version — simple, private, and virtually zero collision probability.
Version 5
Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.